US1135415A - Fender for ships. - Google Patents

Description

A. VON FORSMAN.

FENDER FOR SHIPS.

APPLICATION FILED FEB. 10. 1915.

IHE NORRIS PETERS c0. PHIOTOLITHO. WASHINGTONv D C FENDER FOR SHIPS.

Application filed February 10, 1915.

To all whom it may concern Be it known that 1, ANDREW VON Fons- MAN, citizen of the United States, residing at Iron River, in the county of Iron and State of lllichigan, have invented certain new and useful Improvements in Fenders for Ships, of which the following is a specification.

My invention relates to collision fenders and guards for ships and boats.

The object of my invention is to provide a collision tender and guard adapted to project in front of thestem and bow of a ship or boat and extend from the keel upward to the water line whereby the tender will serve also as a guard for ice-bergs, submerged wreckage, and marine mines.

it is also my object to provide a ships tender with air and spring cushioning means. having connected therewith a watertight collision compartment placed in the hull of the ship designed to prevent injury to or leakage therein should the fender be damaged.

My invention chiefly consists in providing a collision fender and guard for ships and boats adapted for attachment to and conformation with the sheer of the ships bow from the water-line to the keel and having a cut-water head projecting forward of the ships stem, formed with a hollow lOOdY-POI" tion adapted to telescope with a casing fixed to and projecting forward of the ships bow said casing forming an air-chamber provided with air-ports and plunger-rods carrying coiled springs forming cushions for the tender. Also a collision compartment is secured inside the hull and arranged in alinement and communicating with said casing by air-ports and adapted to receive the free ends of said plunger-rods.

My invention further consists in the parts and combination of parts as will hereinafter appear.

In the accompanying drawings forming a part of this specification Figure 1 is a vertical longitudinal section. Fig. 2 is a crosssection taken on the line a, w, of Fig. 1, Fig. 3 is a cross section taken on the line y, y, of Fig. 1 and Fig. l is a cross section taken on the line 70, w, of Fig. 1.

Referring more particularly to the drawings; A denotes a fender made preferably of steel the projecting head or buffer of which forms a cut-water a. Rearwardly of the cut-water the body-portion of the fender Specification of Letters Patent.

Patented Apr. 13, 1915..

Serial No. 7,416.

is hollow forming an air-chamber a the walls of which terminate in a bulkhead a provided with air ports a normally held closed by doors a actuated by springs a 0: denote braces for the walls of the fender.

B, denotes a steel casing secured by its inner end to the ships bow and projects forward of the bow. Within said casing the aft end of the tender and bulkhead a is telescopically mounted.

B denotes a stationary bulkhead formed adjacent to the ships stem, forming the aft wall of the casing B, and, together with the movable bulkhead a forms an air-chamber B within said casing.

6 denotes an air-port having a door b which is normally held closed by a spring 6 and 5 denotes a man-hole. Openings are provided in bulkhead B provided with stufling-boxes 6*, which serve as bearings for plunger-rods hereinafter described.

C. C. C denote plunger-rods rigidly secured to the bulkhead (H. The rods C. C. are provided with coiled springs c, 0, 0, 0, and sliding collars c 0 The rod G is provided with a l rger and stronger spring 0 and a fixed collar 0 this spring is designed more especially to take up the shock of heavy collisions, and is not brought into play until the air-cushion is about one half exhausted.

D denotes a water-tight compartment arranged in alinement with casing B and it serves 'as an auxiliary air-chamber as well as to safe-guard the ship. It is secured inside the hull adjacent to the keelson and stem and provided with a man-hole cl.

E, denotes a steel frame bolted to each side of the bow and to the keel, its outer end projects forward of and in alinement with the ships stem and incloses casing B, serving to hold said casing in position. and brace the same.

In the event of a collision with a heavy obstacle the body portion of the fender is forced back into the casing, the bulkhead a bearing against the coiled springs and air cushion in chamber B The air pressure 'iorces open the spring held doors leading into chambers a and D. When the pressure is relieved the coiled springs aided by the air compressed in chambers a and D, force the bulkhead a and fender back to their normal position. Where submerged wreckage or ice-bergs are encountered my fender safeguards the ship below the water-line, and in the event of contact with a sub-marine mine would explode the same so far in advance of the ships bow as to avoid damage thereto. It is evident from the conformation of my tender to the sheer of a ships bow a minimum of friction is obtained, and its application will not affect the speed of the ship.

Having described my invention what I claim and desire to'secure by Letters Patent is 1. A bow fender for ships adapted to be submerged below the water-line consisting of a cut-water terminating in a hollow bodyportion forming an auxiliary air-chamber,

a casing adapted to receive said body-portion telescopically form an air-cushion therefor and communicate with said air chamber through air-ports, plunger-rods having coiled springs adapted to form an auxiliary cushion, and a water-tight compartment Within the ships bow in alinement withsaid casing adapted to house the free ends of said rods and also form an auxiliary air chamber for said casing.

2. A ships fender having a hollow bodyportion forming an auxiliary air chamber its aft end terminating in a movable bulkhead having air-ports therein and its forward end terminating in a cutwater adapted to project in front of the ships bow, a casing secured to and projecting in front of the bow of the ship comprising an airchamber within which is telescopically mounted said body portion said casing terminating in a fixed bulkhead provided with air ports, a water-tight compartment forming a continuation of said casing and communicating with said air-chamber through airports, plunger-rods carrying coiled springs said rods being rigidly mounted to said movable bulkhead and movably mounted in said fixed bulkhead, and a frame secured to the ships hull adapted to inclose said casing and brace the same.

In testimony whereof I aflix my signature in'presence of two witnesses.

AN DREW VON FORSMAN. lVitnesses:

J. WM. HARRINGTON, E. M. SAWYER.

'Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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